baber/WOPTO huggingface dataset:
Patent GB-446949-A (GB)
Title: Improvements in or relating to the production of esters of cellulose
IPC: C08B3/02
Filed: 1935-09-24
Abstract: Stable organic esters of cellulose are obtained by acting on cellulose with an esterification medium containing the appropriate anhydride, the corresponding acid in amount at least sufficient to dissolve all the cellulose ester produced, less than 10 per cent of sulphur-containing catalyst, based on the weight of cellulose, and as catalyst aid at least 2 per cent of a hydrogen halide.  The catalyst may be sulphuric acid and the catalyst aid may be hydrochloric acid, or zinc, aluminium, or sodium halides together with hydrogen halide. The cellulose esters may be ripened in the presence of hydrochloric acid, aluminium, tin, or zinc chlorides. The esterification solutions may be used directly for the production of articles or the ester may be precipitated with water and redissolved.  In an example, cotton linters are pretreated with acetic anhydride, glacial acetic acid, zinc chloride, and a very small proportion of sulphuric acid.  The mixture is added to a further quantity of acetic anhydride, acetic acid, and sulphuric acid.  The temperature is regulated by cooling means, and aqueous hydrochloric acid is added during esterification. Water is added and the solution is subjected to ripening for several days.  The viscosity of the product may be reduced by raising the temperature of esterification.  The products may be used for the production of artificial filaments or lacquers. Specification 446,723 is referred to.  The Specification as open to inspection under Sect. 91 comprises also the use of other halogen-containing acids or salts of such acids as catalyst aids.  In an example, cellulose is pretreated with acetic anhydride, acetic acid, and sulphuric acid, and then esterified after adding further quantities of acetic anhydride, acetic acid, sulphuric acid, and aluminium chloride.  The solution is ripened after the addition of dilute hydrochloric acid. This subject-matter does not appear in the Specification as accepted.
Patent GB-446804-A (GB)
Title: Improvements in or relating to oscillatory circuit arrangements
IPC: H01P7/04
Filed: 1935-09-24
Abstract: 446,804. Inductances. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London.- (Assignees of Thompson, B. J. ; 45, Woodland Avenue, Summit, New Jersey, U.S.A.) Sept. 24, 1935, No. 26469. Convention date, Sept. 29, 1934. [Class 37] [See also Group XL] A tunable circuit with substantially no external magnetic or electric field consists of a spherical or cylindrical member 1 having a continuous conducting surface and a pair of enclosed condenser plates 4, 5 carried by arms 2, 3. The outer surface of the sphere and the arms 2, 3 together form the tuning inductance, and the plates 4, 5 the adjustable capacity. Power is fed to the circuit by leads 6 which pass through small holes in the outer shell.
Patent GB-1182398-A (GB)
Title: Calendar Timepiece
IPC: G04B19/253
Filed: 1968-06-04
Abstract: 1,182,398. Calendar timepieces. SUWA SEIKOSHA K.K. June 4, 1968 [July 26, 1967], No. 26583/68. Addition to 1, 140, 930. Heading G3T. A calendar timepiece has a setting device settable in a plurality of positions including one in which it is connected to mechanism for correcting day and date indications, and comprising a correcting member selectively engageable with a date ring and a day wheel, and when in said one position being rotatable in one direction to correct the date indication only and in the opposite direction to correct the day indication only and in another of said positions the setting device is disconnected from said mechanism and is operable to set the time indicating hands and the correcting member is out of engagement with both the date ring and the day wheel. Fig. 4 shows a setting device comprising a crown 1 and stem 2 pulled out from a watch casing 101 into a position such that a correcting wheel 14 is disengaged both from a date ring 15 and a day wheel 16, and the stem 2 is coupled via a clutch wheel 3 and gear-wheels 4, 12, and 18 to the minute and hour wheels 19, 20 so that the hands can be set by rotation of the crown 1. When the crown 1 is in a fully in position the clutch wheel 3 is disengaged from the setting wheel 4 and the mainspring may be wound via a winding pinion 5 by the crown 1. In an intermediate position of the crown 1 in which the day and date indications may be set a lever 9 carrying the correcting wheel 14 is released from locking engagement with a lever 7, and the correcting wheel 14 is rotatable via the crown 1, clutch wheel 3 and gear-wheels 4, 12 and 13. Rotation of the correcting wheel 14 in a clockwise direction as seen in Fig. 4 causes movement of the lever 9 to engage the wheel 14 with the date ring 15, and counterclockwise rotation of the wheel 14 causes the lever 9 to engage the wheel 14 with the day wheel 16.
Patent GB-896539-A (GB)
Title: Means for controlling the operation of material conveying devices
Inventor: CALDWELL LAWRENCE GERARD
IPC: B65G53/66
Filed: 1959-08-05
Abstract: 896,539. Automatic feed weighers. KENNEDY VAN SAUN MFG. & ENG. CORPORATION. Aug. 5, 1959, No. 26721/59. Class 143. In an automatic feed weigher wherein the weighed batch of material is discharged from the weigh hopper 7 through a conveying pipe 19 by means of pressure fluid introduced via a valve 46 into the hopper 7 through inlets 45, and the material inlet 13 is controlled by a gate 20 and is pressure sealable by a closure member 33, the gate 20, member 33 and valve 46 each being operated by double acting fluid pressure rams 22, 37 and 48 respectively, the gate ram 22 is controlled by a first electromagnetic valve 31, 32 the magnet 32 of which is normally energized to hold the valve 31 in gate open position but is de-energized, through a load switch 60, on movement of the hopper 7 under a predetermined weight of material therein to move the valve 31 to gate closed position, and the closure member ram 37 and fluid inlet ram 48 are both controlled by a second electromagnetic valve 42, 43 the magnet 43 of which is normally de-energized to open the closure member 33 and close the inlets 45 but is energized, through a limit switch 73 on closure of the gate 20, to close the member 33 and open the inlets 45 for material discharge, Fig. 4, there being a third electrical control switch 64 which is operated by the build up of pressure within the hopper 7 to maintain the respective de-energized and energized conditions of the magnets 32 and 43 irrespective of return movement of the hopper, said switch 64 being returned to its initial position when the pressure in the hopper 7 falls, due to complete discharge of the material, and thereby resetting the valves 31, 32 and 42, 43 to hopper feeding positions. As shown the hopper 7 is resiliently mounted on springs 9 and carries an abutment 62 to operate the load switch 60. Closing of the switch 60 energizes a solenoid 68, Fig. 6, to close retaining circuit contacts 69 and also contacts 70 which complete a circuit to energize a solenoid 57. The energized solenoid 57 opens a switch 56 to de-energize to magnet 32 of valve 30 to permit closing of the feed gate 20 and the consequential closing of the limit switch 73. The magnet 43 of valve 42 is thereby energized via the contacts 70 Build up of pressure in the hopper 7 operates the switch 64 to cause opening of contacts 63 in the circuit of the solenoid 68 and simultaneous closing of contacts 77 which parallel the contacts 70. For discharging of partial loads, the discharge cycle may be initiated by a push button switch . 80 which parallels the load switch 60.
Patent GB-878326-A (GB)
Title: Method and equipment for the packing of yarn or thread cops and cylindrical and conical yarn, ply and thread bobbins
IPC: B65D85/62
Filed: 1958-08-20
Abstract: 878,326. Packaging yarn cops &c. KLAUS, E. Aug. 20, 1958 [Sept. 19, 1957 ; April 23, 1958], No. 26757/58. Class 94(1). Yarn cops &c. are packaged by being strapped together in cylindrical bundles, the bundles being stacked with cardboard or like discs between them, and the stack wrapped to form a cylindrical package, maintained axially by bands or other tension members or by the wrapping. In one embodiment layers, of cops 13 bound by straps (not shown), have their tube ends engaged by discs 10, 10a, 10b and 8, 11, and a wrapper 12 is glued to end rims 8a, 11a, Fig. 1. In other embodiments, two layers enclosed in a wrapper and having one end closing disc, form a part of a package the open end of which is joined to an identical part with a disc between them. The projecting ends of the wrappers at the open ends may telescope, or adjacent ends may be joined by an adhesive band Figs. 8 and 9, (not shown). The resulting package may be strapped longitudinally. Alternatively central and end rings 30, 31 may be applied and joined by ties 35. Assembly packages. Cops may be arranged between pairs of hinged arms 43, 44 mounted on a table 41 which is inclined for case of manual operation. Two pairs of arms spaced axially on the pivot 42 may be supplied for assembling two layers, the wrapper 47 being initially placed within the arms, the cops packed in with a disc 49 between the layers, and the arms drawn together by means not detailed to compress the layers. An end cap 52 and strap 51 are then applied to produce a half package for attachment to a similar half as above described. Only one pair of arms need be used, the arms having gaps permitting fastening of a strap laid within them prior to packing Figs. 2, 3, (not shown). In another arrangement, layers of cops may be assembled on a disc platform 71 which descends stepwise through a slightly tapered cylinder 68, a further plunger 75 engaging the layers from above during each downward movement. The wrapper may pass through the cylinder with the cops, straps being applied as the layers emerge from the cylinder lower end, or they may descend into a support 65 surrounding a wrapper 67 clamped to the cylinder by members 69. Straps 66, previously positioned in beadings 65b, in the support, are tightened on to the bundle through apertures in the beading.
Patent GB-1176933-A (GB)
Title: Improved Drive Unit
Inventor: COE GEORGE HAROLD
IPC: F04B49/12
Filed: 1966-06-15
Abstract: 1,176,933. Shafts ; toothed gearing; eccentrics. METERING PUMPS Ltd. 15 June 1967 [15 June, 1966], No. 26795/66. Headings F2K, F2Q and F2U. A pump drive unit comprises an input shaft 2 having complementary end portions 15 17 which may be connected to the input shafts of adjacent drive units. A shaft 3 is connected to input shaft 2 and carries an adjustable eccentric 4 surrounded by a follower 5 which is adapted to cause reciprocation of pump plungers 6, 7. The eccentricity of the eccentric 4 may be varied by rotation of a screw-threaded collar 12 which effects axial movement of a rod 8 to which an inner wedge portion of the eccentric is connected by a cross-pin 9. The setting of the eccentric is locked in position by a plunger 23 engaging the teeth of a gearwheel 22 attached to the screw-threaded collar 12. The gear-wheel 22 may be utilized as a driven member in a servo control circuit. A lubricating pump 25 is located at the lower end of shaft 3 and supplies lubricant through an axial bore in the rod 9 to spill over the bearing and other parts requiring lubrication.
Patent GB-1158700-A (GB)
Title: Adenosine Derivatives
IPC: C07H19/16
Filed: 1968-06-05
Abstract: 1,158,700. Adenosine derivatives. BOEHRINGER MANNHEIM G.m.b.H. 5 June, 1968 [8 June, 1967], No. 26498/68. Heading C2C. Novel compounds of the general formula (R = H or alkyl containing up to 3 carbon atoms, X = direct link or O and n = 1-5) are prepared by reacting a compound of the formula (Hal = halogen) with a compound of the formula The hydroxyl groups may be protected before the reaction and the protecting groups subsequently removed. The compounds of the invention are coronary dilators.
Patent GB-810513-A (GB)
Title: Improvements in or relating to a wheel
IPC: A01B63/02
Filed: 1956-09-03
Abstract: 810,513. Variable track wheels. FIRESTONE TIRE & RUBBER CO. Sept. 3, 1956 [Sept. 12, 1955], No. 26846/56. Class 144 (2). In a variable track tractor wheel of the form described in Specification 755,707, the helical edge 20 of the wheel disc 11 is received in notches 26 in a circumferential series of pairs of closely spaced bars 23 secured to and extending transversely of the inner periphery of the wheel rim 12, the notches 26 defining a helical path of corresponding pitch to that of the disc edge 20 whereby on relative rotation of the rim and disc the rim moves axially on the disc. As shown the rim has four pairs of bars at 90 degree intervals, each pair comprising channelsection formations 23 projecting radially inwardly from the base of a stamped metal bracket 22 welded to the underside of the rim base 15, the ends of the bracket having radially outward projections 25 abutting the underside of the bead seats 14 of the rim. Each bracket 22 is displaced by a slight angle a from the axial direction to align the notches 26 in its pair of bars 23 with the helical path, the corresponding notches in successive brackets 22 being displaced progressively by a quarter of the helix pitch. To clamp the rim and disc in the desired relation, a clamp member 30 is bolted to the disc for each bracket, the radially outer edge 38 of the clamp member lying snugly between the bars 23 against the base of the bracket, and the radially inner end of the clamp having a lug 35 engaged in an aperture 36 of the disc 11. The clamp is slightly longer radially than the distance of the aperture 36 from the bracket base so that on tightening of the clamp securing nut 31 the clamp pivots about its lug 35 fulcrumed on the aperture surface 39 so that its outer edge 38 wedges the rim radially outwardly, the disc edge at the same time being pulled axially against the sides of the notches 26. In the event of slip, the clamp 35 abuts one or other of the bars 23 to transmit driving or braking torque. The clamp has a slot 34 to receive the clamping bolt 32 whereby for track adjustment, the clamp 35 may be released and moved radially inwardly to park its lug 35 in a recess 42. End stops 45 are bolted to the appropriate brackets to block the notches 26 at the extreme ends of the helical path and provide an abutment for the end edges 44, 47 of the disc. Intermediate stops 50, which may be used also as clamps 35, may be positioned to block any desired notch 26, the stop having a body 51 to lie between the bars of a bracket with one end 52 providing the stop and its other end 54 disposed over the adjacent bar 23 and locked thereto by a bolt 56 the elongated head of which may be passed through a notch 26 and then rotated to abut the underside of the bar 23. Reference has been directed by the Comptroller to Specification 755,707.
Patent GB-754067-A (GB)
Title: Improvements in or relating to cigarette lighters
IPC: F23Q7/00
Filed: 1954-09-17
Abstract: 754,067. Electric cigarette lighters. SCHLUMBOHM, P. Sept. 17, 1954, No. 27017/54. Class 75(3). A car-dashboard electric cigarette lighter has a mirror mounted behind the igniter element to serve as an optical guide to facilitate the directing of the end of the cigarette towards the igniter element. The mirror may be disc shaped and arranged concentrically around the longitudinal axis of the lighter.
Patent GB-228248-A (GB)
Title: Improvements in and relating to the production of stencil-sheets for use in duplicating manuscript and typewritten documents, drawings and the like
IPC: B41N1/24
Filed: 1923-10-29
Abstract: 228,248. Waele, A. de. Oct. 29, 1923. Stencils.-In stencil sheets for duplicating, of the kind comprising a porous support such as Yoshino paper coated with a composition containing gelatinized organic colloid, such as coagulated protein, and a tempering agent, wherein the coating is adapted to be displaced by impact to form a stencil and which does not need moistening prior to cutting the stencil, inorganic bodies, capable of dispersion through the medium in which the colloid is dispersed, are added to the composition with the object of preventing the tempering agent from sweating out of the composition. Inorganic bodies capable of forming colloidal solutions with the disperse medium may be employed, particularly such as absorb many times their own weight of the disperse medium and form gels; in some cases such as possess a negative charge are preferable. Highly-colloidal clays are mentioned as examples, particularly those which swell considerably and gelate in aqueous media. Two specific examples of suitable compositions are given including an aqueous solution of gelatine mixed with mineral oil of specific gravity 0.85 to 0.9, to which is added Bentonite previously allowed to swell in water together with, in one case, a quantity of colloidal china clay. After having been dried, the sheets may be treated with formaldehyde vapour, this treatment being omitted in the case of non-nitrogenous gelatinous bodies.
Patent GB-613839-A (GB)
Title: Improvements in or relating to electromagnetic induction clutches
IPC: H02K49/02
Filed: 1945-10-17
Abstract: 613,839. Electromagnetic clutches. LAVAUD, D. S. DE., and MILDE, C. E. Oct. 17, 1945, No. 27248. Convention date, April 17, 1944. [Class 35] An electromagnetic clutch comprises a homopolar excited armature (not shown) carrying squirrel-cage windings and cooperating with an apertured inductor crown of non-magnetic material 2, e.g. light alloy, having magnetic inserts 1. The inserts, which are cast into the crown may be skewed and ventilation holes are provided. The armature provides an annular gap between its poles accommodating the crown.
Patent GB-142749-A (GB)
Title: Improvements in or relating to clogs and like articles of footwear
IPC: A43B13/28
Filed: 1919-11-05
Abstract: 142,749. Watteeuw, F. G. July 25, 1919, [Convention date]. Clogs; uppers; connecting uppers to soles. - The upper a of a shoe is cast in one piece from aluminium, aluminium alloy, or other metal with integral lugs b, d, e, to which removable treads c, f of wood, fibre, or other material are secured, such as by screws g. The shoe is provided with a sock h and a lining i at the instep.
Patent GB-1427259-A (GB)
Title: Testin fet circuits
IPC: G01R31/27
Filed: 1973-06-08
Abstract: 1427259 Memory cells INTERNATIONAL BUSINESS MACHINES CORP 8 June 1973 [3 July 1972] 27312/73 Heading H3T A method for determining electrical characteristics of a memory cell within a matrix including FETs 11, 12 having their drain electrodes connected respectively to a zero bit line 14 and a one-bit line 19 and their gate electrodes to the other of the bit lines comprises the steps of applying a constant voltage to the drain of one FET and determining its threshold voltage from a measurement of the current flow through the FET at different voltages applied to its gate. The cell may include load FETs 18, 22 whose characteristics may be determined by applying a constant voltage to the gate of associated FET 11 or 12 and changing the voltage condition at its drain by discharging the associated bit line for a first predetermined period and then determining if the charge voltage on the bit line reaches a predetermined value at the end of a second predetermined period. Initially, positive pulses are applied to terminals 31, 32 and word line 16 for setting the selected cell into its active state. For measuring the threshold voltage of FET 11, the arrangement of Fig. 3 is connected to Fig. 1. Supply 55 is set at a constant value and supply 58 is varied. By determining the difference between the voltages applied to the gate of FET 11 for two drain currents differing by a factor of four and by subtracting the lower of the two voltages from this difference, the threshold voltage is obtained. For determaning the characteristics of theload FET's 18 or 22, the arrangement of Fig. 2 is used along with that of Fig. 1. The charging time of a bit line is determined by the impedance of the associated load FET and bit line stray capacitance 29 or 30. Hence if the load is not connected to the node 17 or 21 or if it does not have the desired gain or if the leakage current from the node is excessive then the predetermined voltage will not be attained within the predetermined period.
Patent GB-1427116-A (GB)
Title: Method of copying transferable mirror image originals
IPC: B41M5/025
Filed: 1974-06-20
Abstract: 1427116 Duplicating processes G RITZERFELD 20 June 1974 [3 July 1973] 27377/74 Heading B6C Duplicating from a mirror image master containing a leuco-auramine is characterized by using, as copy sheets, sheets which have a layer 4 of magnesium aluminium silicate, and, in selected areas, a layer 5 of a material effective to prevent colour reaction, and hence printing, in these areas. The layers 4 and 5 preferably have the same colour. Layer 3 on the opposite side, which is alkaline-reacting, e.g. BaSO 4  in synthetic resin, may be provided to prevent set-off from the counter-pressure roller in the event of faulty feed.
Patent GB-867229-A (GB)
Title: Process for the production of dialcohols
Filed: 1957-09-02
Abstract: A dialcohol is produced from an aliphatic mono-aldehydo-monocarboxylic acid by subjecting the acid to hydrogenation in a first step in the presence of a cobalt catalyst at 200-250 DEG C. or a nickel catalyst at 140 DEG -215 DEG C. thereby reducing the aldehyde group to a methylol group, which reacts with the carboxyl group to form an inner ester or estolide, the water formed in the esterification being continuously removed, and thereafter subjecting the estolide to catalytic hydrogenation to yield a dialcohol.  The water evolved in the first hydrogenation step may be removed from the reaction zone by continuously blowing off hydrogen which carries the water with it.  The hydrogen may then be dried and recycled.  The catalytic hydrogenation of the estolide to dialcohol is suitably carried out in the presence of a copper oxide-chromium oxide catalyst.  The mono-aldehydo-mono-carboxylic acids used as starting materials preferably contain 18-23 carbon atoms and may be produced by the oxo synthesis reaction from C17-C22 olefinically unsaturated acids such oleic acid, iso-oleic acids, linoleic acid, linolenic acid, erucic acid and clupanodonic acid. Specification 734,030 is referred to.
Patent GB-1235875-A (GB)
Title: Method and device for manufacturing moulded objects in shaping presses, especially screw bolts
IPC: B21K1/46
Filed: 1968-06-10
Abstract: 1,235,875. Forging. PELTZER & EHLERS. 10 June, 1968 [9 June, 1967], No. 27582/68. Heading B3H. An upsetting machine comprises a die slide 11 with a pair of roughing dies 2a, 2b, 3a, 3b at each side of a finishing die 4 so that bar stock can be rough formed in two steps or any even number of steps and finish formed in one or half the even number of steps. The slide has the dies 2, 3 mounted on a plate 19 which is oscillated by a cam 26 to bring either of the dies 2a or 2b into alignment with one length of stock and either of the dies 3b or 3a into alignment with another length, respectively. The stock is fed to the dies alternately and a blank sheared off. The blank is initially upset (5a), Fig. 1 (not shown), by the die 2a and rough headed in the second step by the die 2b. Between the strokes a second blank is introduced to be upset by the die 3a during the rough heading. On the next stroke the blank (5b) is transferred to the finishing die 4 for trimming and shearing, the blank (6a) is transferred for rough heading and a new blank (7) is introduced to the die (2a). The machine operates so that a blank is introduced alternately to the dies 2a, 3a and a finished blank ejected from the die 4 on each stroke. The slide 11 is reciprocated by a crank-shaft 13 with a flywheel 18. The crank-shaft is geared to the cam-shaft 20 and the cutting and feeding devices. The headed blank may be a screw bolt blank.